SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 DT2

2020 DT2

2020 DT2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.029 AU it takes 1.04 yr to circle the Sun.

Apollo Observations: 31
Orbital Period · P
1.04 yr
v(q)
44 km/s
v(Q)
19.6 km/s
Diameter · ≈
0.01 km
TJ
5.88
Eccentricity · e
0.3833

Orbit and dynamics

Between its closest point (0.634 AU) and its farthest (1.423 AU), the heliocentric distance changes by 0.789 AU over every revolution.

One full revolution takes 1.04 yr (381 days), computed from the semi-major axis of 1.029 AU.

An eccentricity of 0.383 makes the orbit moderately elongated.

Its inclination of 1.95° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 44 km/s at perihelion and falls to 19.6 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 27.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 31 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4554 arcseconds.

Condition code U = 7 signals a poorly constrained orbit, so its future path should be treated as provisional.

About these computed values

Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Orbital Parameters

Semi-Major Axis
1.029 AU
Eccentricity
0.3833
Perihelion
0.634 AU
Aphelion
1.423416 AU
Inclination
1.95°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
304.89°

Orbit diagram

The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.

3D orbit (interactive)

Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.

Close approaches

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2027-Oct-21 12:10 0.346272 AU
51801562 km
24.47 km/s
2042-Feb-04 13:59 0.335682 AU
50217278 km
27.40 km/s
2043-Feb-16 10:03 0.056620 AU
8470183 km
18.97 km/s
2044-Feb-27 00:01 0.005657 AU
846271 km
10.63 km/s
2046-Dec-15 13:08 0.441670 AU
66072853 km
10.65 km/s
2047-Nov-24 18:45 0.381303 AU
57042179 km
10.14 km/s
2049-Oct-02 14:17 0.014436 AU
2159559 km
10.38 km/s
2050-Oct-12 23:22 0.144022 AU
21545380 km
18.50 km/s
2051-Oct-24 17:27 0.407254 AU
60924337 km
26.78 km/s
2066-Feb-09 08:00 0.259196 AU
38775177 km
23.97 km/s
2067-Feb-20 22:47 0.005401 AU
808047 km
15.54 km/s
2068-Feb-26 15:39 0.044197 AU
6611734 km
7.66 km/s
2069-Dec-28 17:39 0.409349 AU
61237703 km
10.45 km/s
2070-Dec-08 18:43 0.432104 AU
64641775 km
10.60 km/s
2071-Nov-17 10:07 0.355605 AU
53197816 km
9.74 km/s
2073-Oct-05 09:38 0.014168 AU
2119505 km
12.86 km/s
2074-Oct-17 00:09 0.245504 AU
36726862 km
21.35 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
27.6

Orbit Quality

RMS
0.45539
Condition
7
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

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